| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a contaminated soil washing tank which performs sufficient stirring action against the total of contaminated soil to be subjected to washing treatment and excellent in durability. <P>SOLUTION: The contaminated soil washing tank 60 cleanses a contaminated soil PS by charging it into a bottomed cylinder 62 being approximately cylindrical and agitating it together with water, discharges the contaminated soil PS precipitating at the bottom part 66 in the cylinder 62, together with water, from a discharge outlet 70 equipped in the vicinity of the bottom part 66 to the outside of the cylinder 62, and resupplies the contaminated soil PS into the cylinder 62 from a resupply port 72 mounted on a peripheral wall 68 in order to agitating. The resupply port 72 is opened so as to gush the contaminated soil PS along the inside face of a peripheral wall 68 and in the same circumference direction, and is assembled plurally. Thus, a continual rotation current arises in the cylinder 62, and the contaminated soil PS is effectively agitated and cleansed. Therefore, the durability of the soil washing tank 60 is improved because installation of a separate agitation equipment is unnecessary and problems, such as degradation, etc., of the agitation equipment are removed. <P>COPYRIGHT: (C)2012,JPO&INPIT |
